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Precision of posttraumatic primary orbital reconstruction using individually bent titanium mesh with and without navigation: a retrospective study.

Essig H, Dressel L, Rana M, Rana M, Kokemueller H, Ruecker M, Gellrich NC - Head Face Med (2013)

Bottom Line: Orbital volume of the unaffected side ranged from 26.6 ml±2.8 ml in male and 25.2 ml±2.6 ml in female (CT).Significant orbital enlargement was found in orbital fractures with involvement of the posterior third of the orbital floor and in comminuted fracture pattern.Reconstructed orbital volume ranged from 26.9±2.7 ml in male and 24.26±2.5 ml in female (CBCT). 3D Analysis of the color mapping showed minor deviations compared to the mirrored unaffected side.

View Article: PubMed Central - HTML - PubMed

ABSTRACT

Background: The aim of orbital wall reconstruction is to reestablish anatomically exact orbital volumes to avoid long-term complications. Navigation could facilitate complex reconstructions.

Methods: Quality of the orbital reconstruction (n=94) was measured based on (A) volume changes and (B) on 3D shape deviations compared to the unaffected side. Volume analysis included segmentation of the orbital cavity in the pre- and post-operative 3D data set (VoXim®, IVS Solutions, Germany), and shape analysis was performed by vector-based 3D tools (Comparison®, 3Dshape, Germany).

Results: Orbital volume of the unaffected side ranged from 26.6 ml±2.8 ml in male and 25.2 ml±2.6 ml in female (CT). Significant orbital enlargement was found in orbital fractures with involvement of the posterior third of the orbital floor and in comminuted fracture pattern. Reconstructed orbital volume ranged from 26.9±2.7 ml in male and 24.26±2.5 ml in female (CBCT). 3D Analysis of the color mapping showed minor deviations compared to the mirrored unaffected side.

Conclusion: Measurements demonstrate that even in comminuted orbital fractures true-to-original reconstruction is feasible.

No MeSH data available.


Related in: MedlinePlus

Segmentation of (A) unaffected, (B) affected, and (C) reconstructed orbit.
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Figure 2: Segmentation of (A) unaffected, (B) affected, and (C) reconstructed orbit.

Mentions: The bony orbit was electronically marked (segmentation) in axial slices and controlled in coronal and sagittal view for volume analysis. The anterior border of the orbit was defined by a straight line through the points L (lateral orbital rim) and M (medial orbital rim). For every axial slice, a subvolume can be assessed by the number of pixels within the defined region, each expressing a voxel value. The overall volume of the orbit is given in cm [3] (Figure 2).


Precision of posttraumatic primary orbital reconstruction using individually bent titanium mesh with and without navigation: a retrospective study.

Essig H, Dressel L, Rana M, Rana M, Kokemueller H, Ruecker M, Gellrich NC - Head Face Med (2013)

Segmentation of (A) unaffected, (B) affected, and (C) reconstructed orbit.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3750456&req=5

Figure 2: Segmentation of (A) unaffected, (B) affected, and (C) reconstructed orbit.
Mentions: The bony orbit was electronically marked (segmentation) in axial slices and controlled in coronal and sagittal view for volume analysis. The anterior border of the orbit was defined by a straight line through the points L (lateral orbital rim) and M (medial orbital rim). For every axial slice, a subvolume can be assessed by the number of pixels within the defined region, each expressing a voxel value. The overall volume of the orbit is given in cm [3] (Figure 2).

Bottom Line: Orbital volume of the unaffected side ranged from 26.6 ml±2.8 ml in male and 25.2 ml±2.6 ml in female (CT).Significant orbital enlargement was found in orbital fractures with involvement of the posterior third of the orbital floor and in comminuted fracture pattern.Reconstructed orbital volume ranged from 26.9±2.7 ml in male and 24.26±2.5 ml in female (CBCT). 3D Analysis of the color mapping showed minor deviations compared to the mirrored unaffected side.

View Article: PubMed Central - HTML - PubMed

ABSTRACT

Background: The aim of orbital wall reconstruction is to reestablish anatomically exact orbital volumes to avoid long-term complications. Navigation could facilitate complex reconstructions.

Methods: Quality of the orbital reconstruction (n=94) was measured based on (A) volume changes and (B) on 3D shape deviations compared to the unaffected side. Volume analysis included segmentation of the orbital cavity in the pre- and post-operative 3D data set (VoXim®, IVS Solutions, Germany), and shape analysis was performed by vector-based 3D tools (Comparison®, 3Dshape, Germany).

Results: Orbital volume of the unaffected side ranged from 26.6 ml±2.8 ml in male and 25.2 ml±2.6 ml in female (CT). Significant orbital enlargement was found in orbital fractures with involvement of the posterior third of the orbital floor and in comminuted fracture pattern. Reconstructed orbital volume ranged from 26.9±2.7 ml in male and 24.26±2.5 ml in female (CBCT). 3D Analysis of the color mapping showed minor deviations compared to the mirrored unaffected side.

Conclusion: Measurements demonstrate that even in comminuted orbital fractures true-to-original reconstruction is feasible.

No MeSH data available.


Related in: MedlinePlus